Renin-Angiotensin System Modulation With Synthetic Angiotensin (1-7) and Angiotensin II Type 1 Receptor–Biased Ligand in Adults With COVID-19
Adult
Male
Angiotensins
SARS-CoV-2
Angiotensin II
Vasodilator Agents
COVID-19
Middle Aged
Ligands
Receptor, Angiotensin, Type 1
Renin-Angiotensin System
03 medical and health sciences
0302 clinical medicine
Humans
Female
Hypoxia
Infusions, Intravenous
Oligopeptides
Randomized Controlled Trials as Topic
DOI:
10.1001/jama.2023.3546
Publication Date:
2023-04-11T15:04:43Z
AUTHORS (213)
ABSTRACT
Importance Preclinical models suggest dysregulation of the renin-angiotensin system (RAS) caused by SARS-CoV-2 infection may increase relative activity angiotensin II compared with (1-7) and be an important contributor to COVID-19 pathophysiology. Objective To evaluate efficacy safety RAS modulation using 2 investigational agents, TXA-127 (synthetic [1-7]) TRV-027 (an type 1 receptor–biased ligand), that are hypothesized potentiate action mitigate II. Design, Setting, Participants Two randomized clinical trials including adults hospitalized acute new-onset hypoxemia were conducted at 35 sites in US between July 22, 2021, April 20, 2022; last follow-up visit: 26, 2022. Interventions A 0.5-mg/kg intravenous infusion once daily for 5 days or placebo. 12-mg/h continuous Main Outcomes Measures The primary outcome was oxygen-free days, ordinal classifies a patient’s status day 28 based on mortality duration supplemental oxygen use; adjusted odds ratio (OR) greater than 1.0 indicated superiority agent vs key secondary 28-day all-cause mortality. Safety outcomes included allergic reaction, new kidney replacement therapy, hypotension. Results Both met prespecified early stopping criteria low probability efficacy. Of 343 patients trial (226 [65.9%] aged 31-64 years, 200 [58.3%] men, 225 [65.6%] White, 274 [79.9%] not Hispanic), 170 received 173 290 (199 [68.6%] 168 [57.9%] 195 [67.2%] [77.6%] 145 Compared placebo, both (unadjusted mean difference, −2.3 [95% CrI, −4.8 0.2]; OR, 0.88 0.59 1.30]) −2.4 −5.1 0.3]; 0.74 0.48 1.13]) resulted no difference days. In trial, occurred 22 163 (13.5%) group 166 (13.3%) placebo (adjusted 0.83 0.41 1.66]). 29 141 (20.6%) 18 140 (12.9%) 1.52 0.75 3.08]). frequency similar either Conclusions Relevance severe COVID-19, (TXA-127 TRV-027) did improve These results do support hypotheses pharmacological interventions selectively block receptor COVID-19. Trial Registration ClinicalTrials.gov Identifier: NCT04924660
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